Identification of nitrate sources in Taihu Lake and its major inflow rivers in China, using delta N-15-NO3- and delta O-18-NO3- values
Chen, ZX (Chen, Zi-Xiang)[1,2,3,4]; Liu, G (Liu, Guang)[1,2,3,4]; Liu, WG (Liu, Wei-Guo)[3]; Lam, MHW (Lam, Michael H. W.)[2,4]; Liu, GJ (Liu, Gui-Jian)[1,2]; Yin, XB (Yin, Xue-Bin)[1,2]
2012-09-30
发表期刊WATER SCIENCE AND TECHNOLOGY
卷号66期号:3页码:536-542
文章类型期刊论文
摘要

In the present study, delta N-15 and delta O-18-NO3- values, as well as concentrations of some major ion tracers were determined in seasonal water samples from Taihu Lake and major watersheds to investigate the temporal and spatial variations of nitrate sources and assess the underlying nitrogen (N) biogeochemistry process. The results lead to the conclusion that the nitrate concentrations in Taihu Lake are lower in summer than that in winter due to the dilution effect of wet deposition. In winter, sewage and manure were the primary nitrate sources in major inflow rivers and North Taihu Lake (NTL), while nitrate sources in East Taihu Lake (ETL) probably derived from soil organic N. In summer, atmospheric deposition and sewage/manure inputs appear to play an important role in controlling the distribution of nitrates in the whole lake. The delta O-18-NO3- values suggest that the nitrate produced from microbial nitrification is another major nitrate source during both winter and summer months. The variations in isotopic values in nitrate suggest denitrification enriched the heavier isotopes of nitrate in NTL in winter and in ETL in summer.

关键词Denitrification Dual Isotopes Nitrate Source Nitrification Taihu Lake
DOI10.2166/wst.2012.193
收录类别SCIE ; EI
语种英语
引用统计
被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10186
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Yin, XB (Yin, Xue-Bin)[1,2]
作者单位1.School of Earth and Space Science,University of Science and Technology of China(USTC), Hefei, Anhui 230026, China;
2.Advanced Laboratory for Environmental Researchand Technology,Joint Advanced Research Center, USTC-CityU,Suzhou, Jiangsu 215123, China;
3.State Key Laboratory of Loess and QuaternaryGeology, IEE, CAS, Xi’an, Shanxi 710075,China;
4.Department of Biology and Chemistry,City University of Hong Kong,83 Tat Chee Avenue,Kowloon, Hong Kong SAR, China
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GB/T 7714
Chen, ZX ,Liu, G ,Liu, WG ,et al. Identification of nitrate sources in Taihu Lake and its major inflow rivers in China, using delta N-15-NO3- and delta O-18-NO3- values[J]. WATER SCIENCE AND TECHNOLOGY,2012,66(3):536-542.
APA Chen, ZX ,Liu, G ,Liu, WG ,Lam, MHW ,Liu, GJ ,&Yin, XB .(2012).Identification of nitrate sources in Taihu Lake and its major inflow rivers in China, using delta N-15-NO3- and delta O-18-NO3- values.WATER SCIENCE AND TECHNOLOGY,66(3),536-542.
MLA Chen, ZX ,et al."Identification of nitrate sources in Taihu Lake and its major inflow rivers in China, using delta N-15-NO3- and delta O-18-NO3- values".WATER SCIENCE AND TECHNOLOGY 66.3(2012):536-542.
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